Pull Request: Save Tweet ID to WP Database

Hi–

Thanks so much for the great plugin!

I am using it to enable twitter-based comments on wordpress blog posts. In order to make that work, I needed to save the Twitter ID of the tweet created when the post was published.

The way I did that was by adding the following to line 475 of wp-to-twitter.php:

update_post_meta( $id, '_jd_wp_tweet_id', $body->id);

Then, in my template, I add the following:

<?php if (get_post_meta($post->ID, '_jd_wp_tweet_id')): ?>
<a class="twitter-discuss-button" target="_twitter" href="https://twitter.com/<?php echo get_option('wtt_twitter_username'); ?>/status/<?php echo get_post_meta($post->ID, '_jd_wp_tweet_id', true); ?>">Discuss on Twitter</a>
<?php endif; ?>

It would be amazing if you could incorporate the change to wp-to-twitter.php

Thanks!
Nick